Constructing a national curriculum evaluation system in China can improve the revision of national curriculum and optimize the quality of the basic education curriculum.It will standardize the evaluation of national curriculum and guide local schools to establish norms. It is also possible to rich the evaluation theory of curriculum, advance the development of curriculum evaluation practice. Integrating national curriculum evaluation will improve the reform mechanism of the examination enrollment system. At present, the evaluation of national curriculum in China still exists some problems. For example, the overall planning of curriculum evaluation activities is not enough. Lacking of relevant evaluation standards and. The evaluation is not objective enough. The responsibility of evaluation subjects is not clear, which leads to the disorder of curriculum evaluation management. Neglecting the expertise of evaluation leads to the administerization of curriculum evaluation. Building national curriculum evaluation system in China needs to strengthen the construction of routine evaluation mechanism about national curriculum, to define the content and standard of national curriculum evaluation, clarify the division of powers and responsibilities of evaluation subjects and set up professional organizations and teams of national curriculum evaluation,etc.